baber/WOPTO huggingface dataset:
Patent GB-1316211-A (GB)
Title: Catalyst system for the polymerization of epoxides
IPC: C08G65/12
Filed: 1971-07-01
Abstract: 1316211 Polymerization catalyst INTERNATIONAL LEAD ZINC RESEARCH ORGANIZATION Inc 1 July 1971 [2 July 1970] 30889/71 Heading B1E [Also in Divisions C2 and C3]  A catalyst system comprises a complex formed by reacting (a) a diorgano zinc compound R Zn R' wherein: R is C 1-6  alkyl or C 6-8  aryl (either of which may be substituted); and R' is the same as R, alkoxy, aryloxy or diarylamino; with (b) a triorgano metal thiolate R 3 M-S-CH 2 -C(R"R"') OH wherein: R is as above; R", R"' are H, CH 3 , CH 2 OH, CH 2 Cl; phenyl (which may be substituted) or (CH 2 ) n CH 3  where n is 1 to 16; and M is Si, Ge, Sn or Pb. The two components are reacted in a non-polar solvent at 0C to 120C under an inert dry atomsphere in quantities to supply a Zn/OH ratio of 1:1 to 1:2. The thiolate compound may be prepared in situ from a triorgano metal hydroxide and a mercapto compound. Catalyst systems described in the Examples are: (i) diethyl or dibutyl zinc, ethyl zinc ethanolate, ethyl zinc phenolate, ethyl zinc diphenylamine or tris (ethyl zinc) glycerolate together with [(2-hydroxyethyl)thio] triphenyl lead; (ii) diphenyl zinc with [(2-dihydroxypropyl)thio] triphenyl lead; (iii) diethyl zinc with [(2-hydroxypropyl)thio] triphenyl lead; (iv) diethyl zinc with [(2-hydroxyethyl)thio] triphenyl lead, [(2- hydroxypropyl)thio] triphenyl lead or [(3- phenoxy-2-hydroxypropyl)thio] triphenyl lead formed in situ by reaction of triphenyl lead hydroxide with the corresponding thiols; (v) diethyl zinc with [(2-hydroxyethyl)thio] tri-ptolyl lead; and (vi) diphenyl zinc with [(2- hydroxy ethyl)thio] triphenyl tin.
Patent GB-244134-A (GB)
Title: Apparatus for the catalytic combustion of mixtures consisting of ammonia and oxygen
IPC: C01B21/26
Filed: 1925-12-08
Abstract: 244,134. Cederberg, I. W. Dec. 8, 1925. Catalytic apparatus; nitrogen oxides, catalytic production of by combustion of ammonia.-To permit the catalytic combustion of ammonia with oxygen or gases rich in oxygen to be performed without the danger of explosion the walls of the reaction chamber are spaced closely together with a thin layer of contact material between them and are preferably formed as cooling surfaces. As shown, suitable apparatus comprises two hexagonal plates 2, preferably of chrome-nickel steel, which are sealed round their edges by screws and packing to form a gas-tight reaction chamber of which the middle. part 4 is extremely narrow. In this part 4 is arranged, the catalytic material 5, which preferably consists of platinum in the form of wire net or corrugated sheet. The plates 2 are provided with jackets 1 for cooling water, the jackets being reinforced with outer ribs 10. In addition to an inlet 6 for the ammonia-oxygen mixture and an outlets 7 for the reaction gases, the apparatus is provided with two lateral openings 8, closed by mica discs 9, which permit a flame of hydrogen or illuminating gas to be directed upon the catalyst to start the reaction. To ensure adequate mixing of the introduced gases, the tube 14 between the inlet 6 and the controlling valve 13 is fitted with nets 15 of nickel wire and is also provided with a filter disc 16; a non-catalytic wire net 17 of nickel is also arranged in the reaction space 4 to assist in the mixing. The composition of the reaction gas is so adjusted that the quantity of oxygen therein is somewhat more than twice the quantity of ammonia, and the speed of the gas through the apparatus is controlled to give a reaction temperature of about 600‹ C. as observed through the mica discs 9. Specification 236,145 is referred to.
Patent GB-871041-A (GB)
Title: Method of and apparatus for developing prints
Inventor: NEWMAN ALBERT LEONARD
IPC: G03G15/09
Filed: 1956-10-11
Abstract: 871,041. Electrostatic image development. MASON & SONS Ltd., E. N. Oct. 11, 1957 [Oct. 11, 1956], No. 31016/56. Class 98(2) An electrostatic latent image is developed by means of a rotary magnet wheel which dips into or rotates just above the developer, which is independently maintained in a state of agitation and comprises toner mixed with ferro-magnetic particles which form "brushes" on the magnet. As shown in Fig. 1, the wheel 3 comprises magnetic or magnetisable vanes 7 on a brass core 5. The vanes may be energised by a coil 4. The developer is stored in container 1, and agitated by a paddle wheel 10 which may be driven with the magnet wheel from a common drive. The powder may also be agitated by periodically energizing one or more coils 16. Guides may be provided for directing the element to be developed across the top of the magnet wheel 3. Specifications 864,370, 867,834 and 867,835 are referred to.
Patent GB-1535608-A (GB)
Title: Process for the synthesis of acyclic monoterpene alcohols
IPC: C07C209/60
Filed: 1976-08-02
Abstract: Acyclic monoterpene alcohols are prepared from isoprene and a dialkylamine, and these are reacted in the presence of a lithium catalyst to give N,N-dialkylnerylamine. The N,N-dialkylnerylamine is reacted with a peroxide compound to give the N,N-dialkylnerylamine N-oxide. The oxide is converted by thermal rearrangement into the O-(acyclic monoterpenyl)-N,N-dialkylhydroxylamine. The O-N bond of the latter is subjected to reductive cleavage to form the alcohol. Depending on the temperature conditions in the thermal rearrangement, the end product obtained is linalool or a mixture of nerol and geraniol. The monoterpene alcohols prepared can be used as perfume components and for the synthesis of odoriferous substances and pharmaceuticals.
Patent GB-1001657-A (GB)
Title: Coating composition containing wax, polyolefin, and ethylene vinyl acetate copolymer
Inventor: ZAAYENGA RALPH
IPC: C09D191/08
Filed: 1963-08-07
Abstract: A wax composition comprises a major proportion of paraffin wax and minor proportions of a polyolefin wax and a copolymer of ethylene and vinyl acetate.  The polyolefin may be a low molecular weight polyethylene, isotactic polypropylene or copolymers thereof.  The copolymer may contain 5-25 moles. of ethylene per mole. of vinyl acetate.  The composition may contain 0.0015-2% of anti-oxidants and certain unspecified amides.ALSO:A wax composition comprises a major proportion of paraffin wax and minor proportions of a polyolefin wax and a copolymer of ethylene and vinyl acetate.  The polyolefin may be a low molecular weight polyethylene, isotactic polypropylene or copolymers thereof.  The copolymer may contain 5-25 moles of ethylene per mole of vinyl acetate.ALSO:Cardboard milk containers, paper cups, canvas and metal fluid containers are coated by dipping in or spraying with a molten wax composition comprising a major proportion of paraffin wax and minor proportions of a polyolefin wax and a copolymer of ethylene and vinyl acetate.  The polyolefin may be a low molecular weight polyethylene, isotactic polypropylene or copolymers thereof.  The copolymer may contain 5-25 moles of ethylene per mole of vinyl acetate.  The composition may contain 0,0015-2% of anti-oxidants and certain unspecified amides.
Patent GB-340647-A (GB)
Title: Process of ozonisation of fermented liquids
IPC: C12H1/14
Filed: 1929-10-14
Abstract: Fermented liquids are ozonized by contact with previously ozonized porous bodies or carriers.  Thus oak chips or shavings in wicker baskets are ozonized with ozonized air or oxygen and then put into the fermented liquid or the liquid is circulated over them.  The Specification as open to inspection under Sect. 91 (3) (a) states that the ozonization of the porous body or carrier may take place in the midst even of the liquid.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1335782-A (GB)
Title: Method for the production of blue-coloured layers permeable to light
IPC: C03C17/245
Filed: 1972-07-04
Abstract: 1335782 Coating with oxides by vapour deposition BALZERS PATENT-UND BETEILIGUNGSA G 4 July 1972 [12 July 1971] 31222/72 Heading C7F A substrate of e.g. glass is coated with a blue layer by evaporating by e.g. an electron beam, a mixture of 30 to 40 wt per cent of cobalt hydroxide, 5 to 15% Al 2 O 3  and the remoulded other oxides preferably SiO 2  in an oxygen atmosphere. The coating is subsequently heated at about 300 C.
Patent GB-254349-A (GB)
Title: Electrical impulse generator
IPC: H02K39/00
Filed: 1924-12-30
Abstract: 254,349. Kapitza, P., and Rostenko, M. Dec. 30, 1924. Producing transient current impulses.-Powerful electrical impulses for signalling, producing intense magnetic fields or other purposes, are produced by short-circuiting an alternator of low impedance for a time interval of the order of that of one cycle by means of an automatic switch capable of being operated at will at relatively long intervals of time. The switch is actuated synchronously with the alternator so as to close the circuit at the instant B, Fig. 1, when the flux, represented by the curve Q, is a maximum and the electromotive force E is zero, and it opens the circuit at the instant A when the current J has fallen to zero, to give a sparkless break. One form of switch for the operation consists of an insulating disc a, Figs. 5 and 7, driven synchronously with the alternator and carrying a conducting segment b adapted to bridge, two brushes c, g the second of which is normally held off by a spring n attached to the pivoted brush arm. The brush is depressed for contact by a lever e<1> and push-rod f actuated by a cam formed on a half nut e which engages a helicoidal feather k on the shaft. To close the circuit, the nut is placed by hand to the left of the position shown in Fig. 5, and is pressed on to the thread k, rotation of the nut during the traverse being prevented by a lug engaging a groove in the framing. After the traverse, the nut is removed and replaced by hand for the next switch closure. In the form shown in Fig. 8, the contacts 10 are bridged by an insulated plate 9 normally held off by springs 12 and moved rectilinearly by a toggle 6 and pushrod 3 which are operated through a lever 2 from a cam 1<b> rotating synchronously with the alternator. Normally the switch is inoperative and the lever 2 is held away from the cam by a spring- operated trigger 11. The toggle-operating link 5 is also out of the path of the push rod, as shown in dotted lines. To operate the switch, the coil 13 is energized to withdraw the trigger 11 and the cam movement is then transmitted to the push-rod bv the lever 2. The coil 14 is also energized to raise the link 5 into the path of the pushrod and the toggle is thereupon carried beyond its dead-centre position by the cam giving a brief make followed by a positive break. The current in the coil 13 is then broken, whereupon the trigger re-engages the lever 2 and holds it away from the cam. Condensers may be connected across the terminals of either form of switch and automatic meansmay be provided for re-setting after the break.
Patent GB-781232-A (GB)
Title: A method of improving metal powders
IPC: B22F9/04
Filed: 1955-11-03
Abstract: 781,232. Making metal powder. AKTIEBOLAGET HOGANASMETODER. Nov. 3, 1955 [Nov. 3, 1954], No. 31473/55. Class 83 (2). Metal powder ground to the required grain size has its compressibility improved by cold rolling to form a continuous band which is subsequently comminuted to powder of the original grain size. Iron powder ground from sponge iron to 100 mesh is rolled into a continuous band, and after pulverizing, is subjected to annealing for 1 hour at 700‹ C. in a hydrogen atmosphere.
Patent GB-1079923-A (GB)
Title: Improvements in vehicle power units
IPC: F02D1/00
Filed: 1964-08-04
Abstract: 1,079,923. Hydraulic transmission controls. ROBERT BOSCH G.m.b.H. Aug. 4, 1964 [Aug. 2, 1963], No. 31504/64. Heading F2D. [Also in Division F1] A vehicle drive comprises a driving I.C. engine 1, an hydraulic variable-speed transmission 4, and a conventional engine-speed responsive fuel regulator 3 having its equilibrium position adjusted by a cam or lever 10 which is coupled to a transmission ratio hydraulic control 5 through a link 11, a slotted lever 12 and a link 15, one end 16 of which is variably positioned along the lever 12 by a drivercontrolled lever 18 acting also on the lever 10 through a cam 22 and sliding rod 24. The regulator 3 may control the throttle valve of a petrol engine carburetter, or, as shown, comprise a fuel control rod 9 of a Diesel engine injector pump 2. A driver controlled lever 30 is connected to the sliding rod 24 through a pin-and-slot 29, 28. The regulator 3 comprises engine-speed responsive flyweights, the equilibrium position of which is determined by a spring loaded by the lever 10. The fuel control rod 9 is spring-connected to a member 38 which, at opposite end positions of the rod 9 acts to close limit switches 36, 37, respectively, for anticlockwise and clockwise adjustment of the lever 10 through an electric motor 35, and a pinion and rack 34, 33. Alternatively, this adjustment of the lever 10 in response to rod 9 position may be effected by a double-acting hydraulic servomotor (Fig. 2, not shown). Operation:- Idling.-The lever 18 is set vertical and the rod 24 rightwardly rests in a recess 40 of the cam 22. The member 38 rests on the limit switch 37 but means (not shown) prevents actuation of the motor 35 at idling. The link end 16 is opposite the fulcrum 13 of the lever 12 so that the hydraulic transmission pump rotates freely.  Starting (Forward).-The lever 18 is moved anticlockwise to pivot, via the rod 24, the lever 10 anticlockwise to increase engine fuel and to move the end 16 upwardly in the lever 12 so that the hydraulic transmission pump starts to deliver. Travelling.-With increasing travelling resistance, engine speed drops and the fuel control rod 9 moves leftwardly to increase fuel. Closure of the limit switch 36 by the member 38 actuates the motor 35 to pivot the lever 10 anticlockwise until the rod 9 assumes a position of optimum efficiency under prevailing load, whereupon the member 38 releases the switch 36. Simultaneously, the hydraulic transmission is adjusted to offset the change in engine speed. The ratio of the linkage 11, 12, 15 is varied by the lever 18 to suit the desired travelling speed. When the member 38 closes the switch 37, the lever 10 is set to a lower fuel delivery. For higher engine speed without ratio change in the linkage 11, 12, 15, the driver may act on the lever 10 by means of the lever 30. Reverse.-The lever 18 is moved clockwise to displace the end to below the fulcrum 13.
Patent GB-258541-A (GB)
Title: Improvements in multiple glass stopper pressing machines
IPC: C03B11/12
Filed: 1925-12-14
Abstract: 258,541. Australian Glass Manufacturers' Co., Ltd. Sept. 21, 1925, [Convention date,]. Pressing.-Relates to a press for making glass stoppers and like articles. The device comprises a table 10 which is rotated intermittently around a fixed column 11 by means of a compressed air cylinder and an oscillating bracket 55<a>. Circular apertures 12 are formed in the table, and body moulds 13 are loosely seated in the apertures. A watercooled press head 26, adjustably supported above the table, is surrounded by a collar 22 which is pressed downwards by springs. A top die 32 is carried by the piston rod of an air cylinder 37 situated below the table and in line with the press head. For removing excess glass from the moulds after the pressing-operation, a shearing-blade 45, operated by an air cylinder 43, is arranged to strike across the top face of each body mould 13. In operation, the table is rotated step-by-step and is locked in each position of rest by a dowel bolt 40 operated by an air cylinder 41. A charge of glass is delivered on to a mould 13 by the funnel of a feeder 69, of suitable known type, carried by a bracket 72, and the metal spreads over the top of the mould. At the pressing station, the top die 32 rises and presses the mould 13 against the press head 26, thus forcing the glass into the cavities in the mould. As it rises. the mould first makes contact with the collar 22 and thus prevents the glass from escaping. When the die is lowered and the mould rests on the table again, the movement of the table carries the mould in front of the shear blade 45, which cuts away the excess of glass. At the next station, a stripper head 47, provided with ejector pins 48. is lowered and forces the stoppers into a shoot 76.
Patent GB-922069-A (GB)
Title: Combustion chamber for a gas turbine engine
Inventor: MURRAY FREDERICK REGINALD
IPC: F23R3/16
Filed: 1960-09-13
Abstract: 922,069. Generating combustion products under pressure. ROLLS-ROYCE Ltd. Sept. 7, 1961 [Sept. 13, 1960], No. 31570/60. Class 51 (1). The air intake 24 for one of a series of flame tubes 13 arranged in an annular chamber formed by walls 11, 12 has upstream an elongated crosssection, Fig. 2, which progressively changes to a circular section at its downstream end, Fig. 7. A duct 26, increasing in size from the upstream to the downstream end of the intake, diverts air to the spaces between the flame tubes 13 and the walls 11, 12 so as to ensure an even distribution of air through the apertures 21, 22, 23. Baffle members 25, located in the intake, form a throat 27 in the plane of the burners so as to guide the air towards the centre of the intake and into the ducts 26.
Patent GB-509596-A (GB)
Title: Improvements in plasticised polyvinyl acetal resins
IPC: C08K5/00
Filed: 1937-11-17
Abstract: 509,596. Polyvinyl acetal resin compositions. JACKSON, L. MELLERSH-. (Fiberloid Corporation). Nov. 17, 1937, No. 31639. [Class 2 (iii)] Polyvinyl acetal resins are plasticized with an ester formed from a polyhydric alcohol and at least two different organic acids or from a polycarboxylic acid and at least two different alcohols, the esterification having been carried if desired to the resin stage. A dihydric alcohol may be combined with two monocarboxylic acids and a trihydric alcohol with three monocarboxylic acids or one monocarboxylic and one dicarboxylic acid : a polycarboxylic acid may be combined with monohydric alcohols or, when two are used, with a monohydric and a polyhydric alcohol. In preparing the esters when using both polyhydric alcohols and polycarboxylic acids, undesired resin-formation is avoided, e.g., in preparing non-resinous diethyleneglycol propionate-phthalate, the propionate is stoichiometrically in excess, the phthalate preferably not being present in more than 1/3 the equivalent of the propionate. In examples : a polyvinyl formaldehyde acetal resin containing 82 per cent. acetal, 8 per cent. hydroxyl, and 10 per cent. acetate, is plasticized with diethyleneglycol propionate - butyrate. or - phthalate; polyvinyl butyraldehyde acetal resin containing 2 or less per cent. acetate, 16 to 20 per cent. hydroxyl, and the balance acetal, is plasticized with n-butyl-iso-butyl phthalate, butyl-hexyl phthalate, or diethyleneglycol laurate-acetate. Specification 351,082 is referred to.
Patent GB-604079-A (GB)
Title: Improvements in or relating to the manufacture of preforms of synthetic resinous materials
IPC: B29B11/12
Filed: 1945-11-23
Abstract: 604,079. Dielectric heating. BAKELITE, Ltd. Nov. 23, 1945, No. 31658. Convention date, Nov. 25, 1944. [Class 39(iii)] [Also in Group V] A preform of thermosetting synthetic resinous material such as phenol-formaldehyde resin with a long fibre filler, is made by subjecting a charge of the material to pressure and to heat generated by a high frequency electrostatic field, the rate of input of energy to the field and the time of heating of the material being sufficient to soften the material but insufficient to result in a loss of plastic flow. A preforming disc mould, comprising walls 11, top and bottom members 12, 13, a base 14, a top plate 16 and leads 18, 19 terminating in contactors 20, 21 connected to brass, copper or bronze electrodes 23, 24, is filled with a charge of material and then the mould is placed in a press and heat and pressure applied simultaneously. The members 12 and 13 may be secured to the platens of a press. The material may be first brought to a softening temperature and then pressed. The mould is preferably of insulating material such as ceramic, glass, low loss mica-filled phenolic resinbonded material or wood. A high frequency generator may be used operating at about 30 megacycles with a power input to the generator of 1,250 watts, the generator having an efficiency of 50 to 60 per cent. The rate of energy input is then 12 to 15 watts per gram. The minimum energy input is about .6 watt per gram. The heating may be applied for 10 seconds to bring the temperature of the material to 90‹C. The maximum temperature to which the material may be raised without loss of plastic flow is about 140‹C. Specification 572,425 is referred to.
Patent GB-1067859-A (GB)
Title: A control device
IPC: H03K17/72
Filed: 1964-08-05
Abstract: 1,067,859. Automatic temperature control. COMPAGNIE GENERALE D'ELECTRICITE. Aug. 5, 1964 [Aug. 6, 1963], No. 31772/64. Heading G3R. In an electrical system for automatically correcting deviations of a variable, the correction signal is applied through a transformer having a core of rectangular hysteresis loop material and a symmetrical semi-conductor switching device in a circuit supplied with alternating current. In Fig. 2, a heater 13 is supplied from an A. C. source S through a symmetrical semi-conductor device 3 having four junctions between layers of opposite conduction type. Variations in temperature due to heater 13 are detected by a device 45 including a thermocouple which controls the energization of a D. C. biasing winding 44 of a transformer 40 having a core of rectangular hysteresis loop material. Normally the transformer primary winding 43, which is energized from a signal generator 21 synchronized with A. C. source S, influences a secondary winding 42 so that the semi-conductor is rendered conductive by the voltage pulses of appropriate polarity applied between control electrode C and rectifiers R1 R2, but, if the temperature rises above a predetermined value, the bias of winding 44 prevents this, so that the supply to the heater is interrupted until the temperature falls. An additional biasing winding on the transformer may be energized in dependence on the temperature of the semi-conductor to safeguard the latter.
Patent GB-1042978-A (GB)
Title: Improvements in or relating to beds, seats and the like
IPC: A47C21/00
Filed: 1963-08-12
Abstract: 1,042,978. Sanitary mattresses &c. L. WRIGHT. Nov. 11, 1964 [Aug. 12, 1963; Dec. 10, 1963], Nos. 31823/63 and 48807/63. Heading A4J. [Also in Division E2] A sanitary mattress or cushion 2, preferably of foamed rubber or plastics, has an underlying support 4, the mattress and support having aligned apertures, such as 2a, beneath which a flexible bag 9 is detachably secured. A plate 5 secured to a rigid or wire mesh support 4 has a depending tubular boss 6 to which the bag 9 may be clipped, or as shown, the bag 9 is clipped 10 to a tubular coupling component 8 which is releasably attached to the boss 6 by a bayonet connection 11, 12 or by screws.